/Engine/Plugins/Online/OnlineFramework/Source/Party/Public/Party/SocialParty.h
virtual void OnInviteSentInternal ( [ESocialSubsystem](API\Plugins\Party\ESocialSubsystem) SubsystemType, const [USocialUser](API\Plugins\Party\User\USocialUser) & InvitedUser, bool bWasSuccessful, const [ESocialPartyInviteFailureReason](API\Plugins\Party\Party\ESocialPartyInviteFailureReason) FailureReason, const [ESocialPartyInviteMethod](API\Plugins\Party\Party\ESocialPartyInviteMethod) InviteMethod )